发明名称 |
Method of producing pre-oxidation fiber and carbon fiber |
摘要 |
There is disclosed a method of producing a pre-oxidation fiber in the production of the pre-oxidation fiber by subjecting a polyacrylic precursor fiber to pre-oxidation processing in an oxidizing atmosphere, including shrinking the precursor fiber as a pretreatment of pre-oxidation at a load of 0.58 g/tex or less in the temperature range of 220 to 260° C. under conditions in which the degree of cyclization (I1620/I2240) of the precursor fiber measured by a Fourier transform infrared spectrophotometer (FT-IR) does not exceed 7%, initially-drawing the precursor fiber at a load of 2.7 to 3.5 g/tex in an oxidizing atmosphere at 230 to 260° C. in the ranges of the degree of cyclization of not exceeding 27% and of the density of not exceeding 1.2 g/cm3, and then subjecting the pre-oxidation fiber to pre-oxidation treatment. A carbon fiber of high strength and high elasticity that is appropriate for composite materials that exhibit high composite performance is obtained by continuously subjecting this pre-oxidation fiber to carbonization treatment. |
申请公布号 |
US8236273(B2) |
申请公布日期 |
2012.08.07 |
申请号 |
US20080747386 |
申请日期 |
2008.12.10 |
申请人 |
OYAMA TARO;KAWAHITO RIE;KIMURA HIROSHI;TOHO TENAX CO., LTD. |
发明人 |
OYAMA TARO;KAWAHITO RIE;KIMURA HIROSHI |
分类号 |
D01F9/12 |
主分类号 |
D01F9/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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